CN104242297A - Voltage abnormality positioning and reason analysis method - Google Patents
Voltage abnormality positioning and reason analysis method Download PDFInfo
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- CN104242297A CN104242297A CN201410319164.0A CN201410319164A CN104242297A CN 104242297 A CN104242297 A CN 104242297A CN 201410319164 A CN201410319164 A CN 201410319164A CN 104242297 A CN104242297 A CN 104242297A
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Abstract
The invention discloses a voltage abnormality positioning and reason analysis method. The voltage abnormality positioning and reason analysis method includes the abnormality positioning step and the reason analysis step. The voltage abnormality positioning and reason analysis method combines abnormality positioning with reason analysis. When the network voltage is abnormal, comprehensive analysis is carried out in four aspects including planning and designing, building, technical transformation and operation management, and a power supply enterprise is assisted in positioning voltage abnormality reasons. By means of the method and system, a power grid topological structure, equipment information and operation data can be automatically integrated, analysis and reason positioning can be automatically carried out, and a diagnostic report can be automatically output. The voltage abnormality positioning and reason analysis method solves the problems that a traditional analysis method is large in work amount, long in consumed time, prone to making mistakes, not comprehensive, low in degree of automation and the like.
Description
Technical field
The present invention relates to the field of electric voltage exception automated analysis report in administration of power networks.
Background technology
In electric power system, whether line voltage normally directly has influence on fail safe and the performance driving economy of electrical network, therefore the voltage levvl of each electric pressure of electrical network is the important parameter of power scheduling department monitoring, is also the important indicator of the Utilities Electric Co.'s management evaluation from supervision department of State Grid to each level.In fact, Operating Voltage is subject to all many-sided factor impacts, and it contains the various key elements in links such as comprising planning and designing, construction, technological transformation, operational management.Influence each other between various key element, intricate, often kind of key element is also all associated with a large amount of infrastructure device information and history data information.Thus, the analysis mode of the off-line simulation instruments such as existing manual analysis mode or dependence etap, is difficult to realize accurately and locate all sidedly causing electric voltage exception Formation causes.
Along with the development of the information system such as power dispatching automation, production management system is with ripe, the large Data Integration to topological structure of electric, facility information and service data can be realized, based on these integral data, adopt line voltage exception analysis method and the system of stratification, realize its reason location.
Summary of the invention
Problem to be solved by this invention is: the location of line voltage exception and the abnormal analysis of causes.
For solving the problem, the scheme that the present invention adopts is as follows:
A method for electric voltage exception location and the analysis of causes, comprises the following steps:
S1: obtain topological structure of electric at different levels, facility information and service data;
S2: analysis and assessment unit based on transformer station, near user side, minimum voltage grade transformer substation, superior transformer station advances step by step, performs following steps to each transformer station:
S21: low-pressure side (if there is medium voltage side, processing too, the lower same) busbar voltage reading transformer station in some cycles, judges whether it out-of-limit value event occurs; If there is not out-of-limit event, show our station normal operation, continue to analyze next transformer station; If generation out-of-limit event, then continue to perform step S22;
S22: if substation low-voltage side busbar voltage is out-of-limit, and the high-voltage side bus of power supply also occurs equidirectional out-of-limit, then the electric voltage exception at this station should be associated to higher level transformer station, and the step of Analysis on Abnormal in the station turning higher level transformer station; Otherwise, continue to perform step S23;
S23: if substation low-voltage side busbar voltage is out-of-limit, carries out according to the reactive power foldback of subordinate's outlet, line power factor, load variations, power plant situation the impact whether comprehensive descision is subject to subordinate; If be subject to the impact of subordinate, then the step of Analysis on Abnormal in the station of higher level transformer station of walking around; Otherwise, continue to perform step S24;
S24: the contribution degree deducting upper level power supply, subordinate's impact according to busbar voltage intensity of anomaly, if result on the occasion of; show that there is station intrinsic factor causes voltage that out-of-limit exception occurs, the step of Analysis on Abnormal in the station turning this transformer station of station; Otherwise continue to analyze next transformer station;
In described station, the step of Analysis on Abnormal comprises the following steps:
S31: adopt the nine-zone graph containing hysteresis margin band to analyze and cause electric voltage exception concrete reason due to operational management;
S32: according to main transformer load factor, no-power vacancy, load condition, and the concrete configuration of bonding apparatus and automaticity situation, decomposite technical equipment ability;
S33: the ABCDE type load district belonging to service area of transformer station, in conjunction with the requirement of corresponding electrical reticulation design directive/guide, judges the compliance of design.
Technique effect of the present invention: the present invention is a kind of method that abnormal location and failure reason analysis combine.Occur extremely at line voltage, the present invention comprehensively analyzes from planning and designing, construction, technological transformation, operational management four aspects, helps power supply enterprise's positioning voltage abnormal cause.The method and system can integrate topological structure of electric, facility information and service data automatically, automatically carry out analyzing and localized reason, and automatically export diagnosis report.Problems such as this method solving large, the consuming time length of work of traditional analysis, easily make mistakes, comprehensive, automaticity is low.
Accompanying drawing explanation
Fig. 1 is that the present invention positions transformer station and the schematic flow sheet of the analysis of causes.
Fig. 2 is the analysis strategy that transformer substation voltage of the present invention is prescribed a time limit.
Fig. 3 is the more lower analysis strategy of prescribing a time limit of transformer substation voltage of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
Topological structure of electric at different levels of the present invention, facility information and service data derive from EMS Energy Management System, or the present invention is subordinated to a part for EMS Energy Management System.Wherein the information of topological structure of electric comprises: major network topological model: 1. unit-> plant stand-> bus section-> line; 2. unit-> plant stand-> main transformer-> winding (hanging on bus section); 3. unit-> plant stand-> capacitor, reactor.Facility information is the static archives of equipment, comprising: 1. main transformer rated voltage, rated capacity, voltage ratio, gear, whether have static informations such as carrying; 2. the static information such as rated voltage, rated current, rated capacity of capacitor.Service data comprises telemetry and remote signalling data.Wherein telemetry comprises the Uac of 1. bus sectional lized 5 minutes granularities; 3. P, Q of 5 minutes granularities of line, main transformer three side winding; 4. the gear remote measurement value of main transformer 5 minutes granularities; 5. the Q of condenser reactance device 5 clock granularity.Remote signalling data comprises 1. main shift and regulates the remote signalling data of action 2. the remote signalling data removing action thrown by capacitor, reactor.
The present invention mainly comprises two steps, abnormal location and the analysis of causes.Wherein abnormal position fixing process is analysis and assessment unit based on transformer station, from near user side, minimum voltage grade transformer substation, superior transformer station advances step by step, travels through each transformer station, to each transformer station's execution step as shown in Figure 1 in ergodic process:
S21: low-pressure side (if there is medium voltage side, processing too, the lower same) busbar voltage reading transformer station in some cycles, judges whether it out-of-limit value event occurs; If there is not out-of-limit event, show our station normal operation, continue to analyze next transformer station; If generation out-of-limit event, then continue to perform step S22.Here some cycles can be one week or one month or two weeks.
S22: if substation low-voltage side busbar voltage is out-of-limit, and the high-voltage side bus of power supply also occurs equidirectional out-of-limit, then the electric voltage exception at this station should be associated to higher level transformer station, and the step of Analysis on Abnormal in the station turning higher level transformer station; Otherwise, continue to perform step S23.
S23: if substation low-voltage side busbar voltage is out-of-limit, carries out according to the reactive power foldback of subordinate's outlet, line power factor, load variations, power plant situation the impact whether comprehensive descision is subject to subordinate; If be subject to the impact of subordinate, then the step of Analysis on Abnormal in the station of higher level transformer station of walking around; Otherwise, continue to perform step S24.
S24: the contribution degree deducting upper level power supply, subordinate's impact according to busbar voltage intensity of anomaly, if result on the occasion of; show that there is station intrinsic factor causes voltage that out-of-limit exception occurs, the step of Analysis on Abnormal in the station turning this transformer station of station; Otherwise continue to analyze next transformer station.
Wherein step S22, S23 are identical with the step of Analysis on Abnormal in station in step S24, are the step of the analysis of causes, and difference is that input is different.In standing, the step of Analysis on Abnormal is for evaluate successively propulsion mode according to analyzing capacity of equipment from operational management, realizes the location of one-level reason, secondary reason.
Gathering of the one-level reason of electric voltage exception analysis, secondary reason is as shown in the table.
Specifically, stand in the step of Analysis on Abnormal comprise following sub-step:
S31: adopt the nine-zone graph containing hysteresis margin band to analyze and cause electric voltage exception concrete reason due to operational management;
S32: according to main transformer load factor, no-power vacancy, load condition, and the concrete configuration of bonding apparatus and automaticity situation, decomposite technical equipment ability;
S33: the ABCDE type load district belonging to service area of transformer station, in conjunction with the requirement of corresponding electrical reticulation design directive/guide, judges the compliance of design.
The strategy that step S31, S32, S33 judge as shown in Figure 2,3.
After above-mentioned steps process completes, generating report forms.Form according to electric network composition, by department, carry out tabulate statistics by dimensions such as transformer stations, adopts figure and list mode to show diagnosis report.
1) carry out tabulate statistics and displaying by unit, realize tabulate statistics and the displaying step by step of province and district, county, business office.
2) tabulate statistics and displaying is carried out according to component voltage layer, point service area.
3) tabulate statistics and displaying is carried out according to transformer station
The mode of showing:
1) adopt Pareto diagram to show, it is arranged in order according to significance level the quality problems of appearance and quality improvement project, determines the principal element producing quality problems.
2) show according to form
3) by the data such as voltage, power, power factor, load factor of association, association can be carried out with curve chart and shows by connecting.
Claims (1)
1. a method for electric voltage exception location and the analysis of causes, is characterized in that, comprise the following steps:
S1: obtain topological structure of electric at different levels, facility information and service data;
S2: analysis and assessment unit based on transformer station, near user side, minimum voltage grade transformer substation, superior transformer station advances step by step, performs following steps to each transformer station:
S21: low-pressure side (if there is medium voltage side, processing too, the lower same) busbar voltage reading transformer station in some cycles, judges whether it out-of-limit value event occurs; If there is not out-of-limit event, show our station normal operation, continue to analyze next transformer station; If generation out-of-limit event, then continue to perform step S22;
S22: if substation low-voltage side busbar voltage is out-of-limit, and the high-voltage side bus of power supply also occurs equidirectional out-of-limit, then the electric voltage exception at this station should be associated to higher level transformer station, and the step of Analysis on Abnormal in the station turning higher level transformer station; Otherwise, continue to perform step S23;
S23: if substation low-voltage side busbar voltage is out-of-limit, carries out according to the reactive power foldback of subordinate's outlet, line power factor, load variations, power plant situation the impact whether comprehensive descision is subject to subordinate; If be subject to the impact of subordinate, then the step of Analysis on Abnormal in the station of higher level transformer station of walking around; Otherwise, continue to perform step S24;
S24: the contribution degree deducting upper level power supply, subordinate's impact according to busbar voltage intensity of anomaly, if result on the occasion of; show that there is station intrinsic factor causes voltage that out-of-limit exception occurs, the step of Analysis on Abnormal in the station turning this transformer station of station; Otherwise continue to analyze next transformer station;
In described station, the step of Analysis on Abnormal is for evaluate successively propulsion mode according to analyzing capacity of equipment from operational management, and realize the location of one-level reason, secondary reason, this step comprises the following steps:
S31: adopt the nine-zone graph containing hysteresis margin band to analyze and cause electric voltage exception concrete reason due to operational management;
S32: according to main transformer load factor, no-power vacancy, load condition, and the concrete configuration of bonding apparatus and automaticity situation, decomposite technical equipment ability;
S33: the ABCDE type load district belonging to service area of transformer station, in conjunction with the requirement of corresponding electrical reticulation design directive/guide, judges the compliance of design.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106443363A (en) * | 2016-11-21 | 2017-02-22 | 深圳供电局有限公司 | Method, device and system for monitoring power supply capacity abnormity in power grid |
| CN106443279A (en) * | 2016-11-21 | 2017-02-22 | 深圳供电局有限公司 | Method, device and system for monitoring operation management abnormity in power grid |
| CN106786627A (en) * | 2016-12-23 | 2017-05-31 | 国网浙江奉化市供电公司 | A kind of transformer station's step voltage control method and system |
| CN106786646A (en) * | 2016-12-23 | 2017-05-31 | 国网浙江奉化市供电公司 | A kind of line level voltage control method and system |
| CN109118124A (en) * | 2018-09-26 | 2019-01-01 | 国网安徽省电力有限公司芜湖供电公司 | A kind of platform area outlet low-voltage cause diagnosis method based on feature identification |
| CN110266000A (en) * | 2019-06-17 | 2019-09-20 | 国网江苏省电力有限公司 | A kind of out-of-limit analysis of causes method of distribution network voltage, system and storage medium |
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| CN106443363A (en) * | 2016-11-21 | 2017-02-22 | 深圳供电局有限公司 | Method, device and system for monitoring power supply capacity abnormity in power grid |
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| CN106786627A (en) * | 2016-12-23 | 2017-05-31 | 国网浙江奉化市供电公司 | A kind of transformer station's step voltage control method and system |
| CN106786646A (en) * | 2016-12-23 | 2017-05-31 | 国网浙江奉化市供电公司 | A kind of line level voltage control method and system |
| CN109118124A (en) * | 2018-09-26 | 2019-01-01 | 国网安徽省电力有限公司芜湖供电公司 | A kind of platform area outlet low-voltage cause diagnosis method based on feature identification |
| CN109118124B (en) * | 2018-09-26 | 2022-02-11 | 国网安徽省电力有限公司芜湖供电公司 | Transformer area outlet low voltage reason diagnosis method based on feature recognition |
| CN110266000A (en) * | 2019-06-17 | 2019-09-20 | 国网江苏省电力有限公司 | A kind of out-of-limit analysis of causes method of distribution network voltage, system and storage medium |
| CN110266000B (en) * | 2019-06-17 | 2022-07-19 | 国网江苏省电力有限公司 | Power distribution network voltage out-of-limit reason analysis method, system and storage medium |
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